When emerging dev-util/perf (which picked up 6.14, latest stable), I
got a warning about my kernel config:
* Checking for suitable kernel configuration options ...
* CONFIG_SCHED_OMIT_FRAME_POINTER: should not be set. But it is.
* CONFIG_FRAME_POINTER: is not set when it should be.
* Please check to make sure these options are set correctly.
* Failure to do so may cause unexpected problems.
I've had to adjust kernel settings a few times before for packages,
but I normally find the relevant nodes to enable via the wiki for the
package [1]. In this case, none are mentioned. There are quite a few
config checks in the ebuild, though I can trace these specifically to
cc02b6f4e4a3 (dev-util/perf: add 6.12, 2024-11-19) in the Gentoo
repository.
Anyway, I was curious about these checks since they're warnings, and
after digging through the perf wiki, some bits of source code, etc., I
can't figure out why these configs are relevant (or even where perf
documents what it needs). Any tips? What might go wrong here? Or
"ignore for now"?
[1]: https://wiki.gentoo.org/wiki/Perf
--
D. Ben Knoble
